Item1-Specifications-1240BH21Q0005.pdf

USDA FOREST SERVICE PROJECT SPECIFICATIONS

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 1/1 Specification List

SPECIFICATION LIST

GOLD BEACH RESIDENCE #1007 ROOF REPLACEMENT

Gold Beach Ranger District

Rogue River – Siskiyou National Forest Coos County, Oregon

CONSTRUCTION SPECIFICATION INSTITUTE (CSI) SPECIFICATIONS

SECTION TITLE

DIVISION 01 – GENERAL REQUIREMENTS

01020 Intent of Contract 01025 Measurement and Payment 01200 Mobilization

DIVISION 06 – WOOD AND PLASTICS

06100 Roof Sheathing

DIVISION 07 – THERMAL AND MOISTURE PROTECTION

07313 Wood shingle

07620 Sheet Metal Flash and Trim

Rev. Date 02/21 Gold Beach Roof Replacements and Roof Repairs 01020 - 1/1 Intent of Contract

SECTION 01020

INTENT OF CONTRACT

1. PART 1 - GENERAL

1.01 SUMMARY

A. The intent of the contract is to provide for the complete construction of a fully functional project as described in the contract documents and Drawings. Unless otherwise provided, the Contractor shall furnish all labor, materials, equipment, tools, transportation, and supplies, and shall perform all work required to complete the project within reasonably close conformity to the Drawings and Specifications, and in accordance with provisions of the contract.

2. PART 2 – PRODUCTS (NOT USED)

3. PART 3 – EXECUTION (NOT USED)

4. PART 4 - MEASUREMENT AND PAYMENT (NOT USED)

END OF SECTION

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 01025 - 1/2 Measurement and Payment

SECTION 01025

MEASUREMENT AND PAYMENT

1. PART 1 - GENERAL

1.01 SUMMARY

A. Measurement and payment for contract work will be made only for and under those pay items included in the Schedule of Items. All other work, labor, materials, equipment, and incidentals necessary to successfully complete the project will be considered as included in the payment for items shown. This section defines the method of measurements and basis of payment for work items listed in the Schedule of Items.

B. Not all units and measurement methods may be used under this Contract.

1.02 DETERMINATION OF QUANTITIES

A. The following measurements and calculations shall be used to determine contract quantities for payment.

1. For individual construction items, longitudinal and lateral measurements for area computation shall be made horizontally or corrected to horizontal measurement unless otherwise specified. Measurements for geotextiles, netting, and erosion control blankets shall be along slope lines.

2. For structures they shall be measured according to neat lines shown on the Drawings or as altered by the CO, in writing, to fit field conditions.

3. For items that are measured by the linear foot, such as pipe culverts, fencing, guardrail, piping, utilities, and underdrains, measurement shall be made parallel to the base of foundation upon which the structures are placed.

4. For standard manufactured items (such as fence, wire, plates, rolled shapes, pipe conduits) identified by gauge, weight, section dimensions, and so forth, such identifications shall be considered the nominal weights or dimensions.

Unless controlled by tolerances in cited specifications, manufacturer's tolerances shall be accepted.

1.03 UNITS OF MEASUREMENT

A. Payment shall be by units defined and determined according to U.S. Standard measure and by the following:

1. Square (SQ): 100 square feet unit, measured on the surface of roof plane.

2. Lump Sum (LS): One complete unit, not directly measured. The bid amount is complete payment for all work described in the contract and necessary to complete the work for that item.

3. Square Foot (SF): Measured on a plane parallel to the surfacing being measured.

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 01025 - 2/2 Measurement and Payment

1.04 METHOD OF MEASUREMENT

A. The following methods of measurement for determining final payment is designated on the Schedule of Items for each pay item:

1. ACTUAL QUANTITIES (AQ) - These quantities are determined from actual measurements of completed work.

2. DESIGNED QUANTITIES (DQ) - These quantities denote the final number or units to be paid for under the terms of the contract. They are based upon the original design data available prior to advertising the project. Original design data include the preliminary survey information, design assumptions, calculations, drawings, and the presentation in the contract. Changes in the number of units shown in the Schedule of Items may be authorized under any of the following conditions:

a. As a result of changes in the work authorized by the CO.

b. As a result of the CO determining that errors exist in the original design that causes a pay item quantity to change by 15 percent or more.

c. As a result of the Contractor submitting to the CO a written request showing evidence of errors in the original design that cause a pay item quantity to change by 15 percent or more. The evidence must be verifiable and consist of calculations, drawings, or other data that show how the designed quantity is believed to be in error.

3. LUMP SUM QUANTITIES (LSQ) - These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job. They shall not be measured.

2. PART 2 – PRODUCTS (NOT USED)

3. PART 3 – EXECUTION (NOT USED)

4. PART 4 - MEASUREMENT AND PAYMENT (NOT USED)

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 01200 - 1/1 Mobilization

SECTION 01200

MOBILIZATION

1. PART 1 - GENERAL

1.01 SUMMARY

A. This work shall consist of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site, and for all other work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items on the project site.

2. PART 2 - PRODUCTS (NOT USED)

3. PART 3 - EXECUTION (NOT USED)

4. PART 4 - MEASUREMENT AND PAYMENT

4.01 PROGRESS PAYMENTS WILL BE MADE AS FOLLOWS:

A. When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount for mobilization, or 5 percent of the original contract amount, whichever is less, will be paid.

B. When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount for mobilization, or 10 percent of the original contract amount, whichever is less, will be paid.

C. Upon completion of all work on the project, any unpaid amount for mobilization will be paid.

D. The total of all payments shall not exceed the original contract amount for this item.

4.02 BASIS OF PAYMENT

A. Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

01200-1 Mobilization Lump Sum

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 06100 - 1/2 Roof Sheathing

SECTION 06100

ROOF SHEATHING

1. PART 1 - GENERAL

1.01 SUMMARY

A. This section specifies replacement of deteriorated lumber on roof prior to placement of new roofing materials.

1.02 RELATED SECTIONS

A. 07313 Wood Shingle Roof

1.03 QUALITY ASSURANCE

A. Furnish materials complying with the following:

1. Softwood Lumber

a. Graded in accordance with the latest edition of "Standard Grading Rules

No. 17,” WCLIB, or "Western Grading Rules," WWPA. Lumber grades specified below are taken from “Standard Grading Rules, No.

17." Equal grades from "Western Grading Rules" are acceptable.

Furnish lumber bearing a recognized grading bureau mark or a "Certificate of Grade" may be substituted. Where a grade for Douglas Fir (DF) species is indicated, other species, if approved by the CO, may be supplied on an equal stress grade basis.

2. All materials and construction techniques shall meet applicable Local codes or the requirements herein, whichever is stricter.

2. PART 2 - PRODUCTS

2.01 MATERIALS

A. Lumber Roof.

1. Furnish DF S4S lumber, sized to match existing roofs. Furnish with a moisture content of 19 percent or less.

B. Nails

1. Provide H.D.G. nails sized in accordance with the Oregon Structural Specialty Code table 2304.9.1

3. PART 3 - EXECUTION

3.01 CONSTRUCTION

A. Roof Sheathing Replacement

1. Upon removal of existing roofing materials, notify CO of any deteriorated lumber roof sheathing.

2. Existing deteriorated roof sheathing shall be removed and replaced as directed by CO.

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 06100 - 2/2 Roof Sheathing

3. Apply replacement lumber roof sheathing with the face grain at right angles to support, over a minimum of 2 spans. Stagger end joints.

4. PART 4 - MEASUREMENT AND PAYMENT

4.01 METHOD OF MEASURMENT:

A. Roof Sheathing Replacement

1. Actual quantities, measurement will be made per square foot of sheathing replaced, where skip sheathing is present; payment will only be made for the surface area of the sheathing. Payment will not be made for gaps adjacent to sheathing replaced.

06100-1 Roof Sheathing Replacement Square Foot

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 07313 - 1/6 Wood Shingle Roof

SECTION 07313

WOOD SHINGLE ROOF

1. PART 1 - GENERAL

1.01 SUMMARY

A. This section specifies work related to removing and disposing of existing roofing materials and the furnishing and installing new cedar wood shingle roofs complete with flashings and other related accessories. See photos as follows.

1.02 RELATED SECTIONS

A. 06100 Roof Sheathing

1.03 SUBMITTALS

A. Samples: Furnish representative sample for each of the following:

1. Shingles

2. Ridge / hip cap

1.04 DELIVERY, STORAGE, AND HANDLING

A. Deliver material to the site, undamaged, with labels intact. Store out of the weather in a well-ventilated area.

1.05 WARRANTY

A. Furnish a written 5-year guarantee for materials and workmanship against a defective roofing system, including repairs to maintain a watertight condition.

Figure-1 South View

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 07313 - 2/6 Wood Shingle Roof

Figure-2 East View

Figure-3 North View

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 07313 - 3/6 Wood Shingle Roof

Figure-4 West View

2. PART 2 - PRODUCTS

2.01 MATERIALS

A. Wood Shingles.

1. VG, 16 inch, Certigrade No. 1 Blue Label, Western Red Cedar (WRC), maximum width 10-inch, minimum width 4 inch.

2. Certi-Last preservative treated (pressure process).

B. Ridge and Hip units

1. Units of same thickness as roof shingle, 7 inches wide; beveled, alternately overlapped and nailed.

C. Nails.

1. Hot-dipped galvanized box nails, size as required to firmly secure the shingles to sheathing with a minimum of ¾” penetration. Nails shall not penetrate exposed surfaces. Equivalent stainless-steel staples may be used in lieu of nails with the approval of the CO.

D. Felt.

1. ASTM D226, Type II, 30 pounds/square.

E. Flashing.

1. 26 gauge galvanized.

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 07313 - 4/6 Wood Shingle Roof

F. Roof Vent

1. “Ventsure” square roof vent in brown galvanized as manufactured by Owens

Corning or approved equal. Sized as shown on the Drawings.

3. PART 3 – EXECUTION

3.01 EXISTING ROOF REMOVAL

A. Unless otherwise noted on the drawings, remove and dispose of all existing roof materials including shingles, shakes, trim, flashing, fasteners, felt, etc. Removed materials become property of the Contractor for disposal off National Forest land, unless otherwise specified. Removed materials shall be disposed of in accordance with applicable laws and regulations. Do not allow removed materials to accumulate at the site.

B. Clean existing lumber sheathing of any debris.

C. Drive flush all sheathing nails that have worked out.

D. Re-nail all sheathing that has become loose.

E. Replace any deteriorated or missing sheathing as directed by CO, see section

06100.

3.02 INSPECTION

A. Surface to which the roofing is to be applied shall be even, smooth, sound, clean, and dry. Do not begin roofing work until surface deficiencies have been corrected and approval has been given by the CO.

3.03 TEMPORARY WEATHER PROTECTION

A. Contractor shall take necessary precautions and provide tarps as needed to assure watertight roof during construction in wet weather. At the Contractor’s discretion, work may be performed in stages to limit exposure.

3.04 WOOD SHINGLES

A. Install wood shingle roofing according to manufacturer's written instructions, recommendations in CSSB's "Design and Application Manual for New Roof Construction," and recommendations in NRCA's "The NRCA Roofing and Waterproofing Manual."

B. Lay shingles with 5 inch exposure. Apply double starter course at eaves. Project first course 1-1/2 inch beyond sheathing and project shingles 1” beyond the fascia at gable ends. Space shingles 1/4 inch apart and staggers joints 1-1/2 inch in adjacent courses. Joints in alternate courses shall not be in direct alignment. Snap chalk line every three to four courses as needed to maintain alignment. Adjust nailing pattern as needed to allow for varying skip sheathing spacing.

C. Apply shingles with two fasteners per shingle, 3/4 inch from the edge and not more than 1 inch above the exposure line. Minimum penetration into sheathing shall not be less than ¾”. Do not drive nail heads below the shingle surface.

D. Install a concealed strip of felt or metal over hips and ridges under the ridge or hip cap, except where vented ridge is required. Install hip or ridge units over wood

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 07313 - 5/6 Wood Shingle Roof shingles trimmed at apex. Maintain same exposure dimension of units as roof shingle exposure. Lap units at ridges to shed water away from direction of prevailing winds. Alternate overlaps of units and fasten with concealed roofing nails of sufficient length to penetrate sheathing at least 3/4”.

3.05 VALLEY FLASHING

A. Underlay all valley metal with a continuous strip of felt 36” wide.

B. Install metal flashing in all valleys. Extend 11 inch on each side of valley center and provide pre-formed splash diverter rib not less than 1” high at the flow line.

Lap flashing at ends minimum 4”. Saw all shingles extending into valleys to the proper miter.

3.06 ROOF PROJECTION FLASHING

A. Chimneys

1. Chimney flashing shall extend up the chimney to a height not less than 4”, up the roof slope to a point equal in height to the flashing on the chimney but never less than 1 ½ times the shingle exposure.

2. Manufactured step flashing shall have a minimum vertical and horizontal width of 4”.

3. Apron counter flashing shall be installed over step flashing to within 1” of the surface of the finished roof.

4. Provide pre-formed bottom flashing at the low side of the chimney with a vertical dimension of not less than 4” and a horizontal dimension of not less than 6”.

5. Provide pre-formed head flashing at the uphill side of the chimney extending a minimum of 10” under the shingles.

B. Other vertical projections

1. Step flashing shall be used where vertical surfaces occur in connection with roof slopes. They shall be formed of separate pieces and shall have a minimum vertical and horizontal width of 4” extending under the shingles and vertical wall coverings. Gently lift existing siding and trim to allow placement. Flashing shall be installed to avoid damage to existing siding and trim, re-nail, patch and touch up paint as required.

2. Step flashing shall be installed in step fashion and each piece shall lap not less than 3” (one flashing installed on each course concealed under the covering course).

C. Pipe projections

1. Install preformed roof jacks at all plumbing stacks. Metal base flange shall extend no less than 6” in all directions and shall be installed to lap and shed water. Do not penetrate lower flashing flange with roofing nails. Provide minimum side lap of 3” and cut shingles back 1” around side and top of projection.

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 07313 - 6/6 Wood Shingle Roof

3.07 ROOF VENT

A. Cut back existing roof sheathing where needed to allow installation of vent.

B. Install vent in accordance with the manufacturer’s recommendations.

3.08 CLEANUP

A. Remove all excess materials and clean all gutters and downspouts.

4. PART 4 - MEASUREMENT AND PAYMENT

4.01 METHOD OF MEASUREMENT

A. Measurement will not be made as items will be based on the design quantities as shown in the Schedule of Items.

07313-1 Roof Replacement Square

Rev. Date 02/21 Gold Beach Residence #1007 Roof Replacement 07620 - 1/1 Sheet Metal Flashing & Trim

SECTION 07620

SHEET METAL FLASHING AND TRIM

1. PART 1 - GENERAL

1.01 SUMMARY

A. This section specifies flashing and sheet metal work and required accessories.

2. PART 2 - PRODUCTS

2.01 MATERIALS

A. Flashing:

1. 26 gauge galvanized steel, ASTM A361, ASTM G90, Type I, Class D or 0.032 inch thick aluminum, dark brown color.

B. Fasteners

1. Hot-dipped galvanized or aluminum to match flashing material and finish.

3. PART 3 – EXECUTION

3.01 FABRICATION

A. Shop fabricate items where possible. Accurately reproduce profiles as shown on Drawings. Fabricate pieces in longest practical lengths. Hem exposed edges on underside ¼ inch.

3.02 CONSTRUCTION

A. Window head and sill flashing

1. Form and install head and sill flashing as shown on the drawings and to match adjoining profiles.

4. PART 4 - MEASUREMENT AND PAYMENT

4.01 INCIDENTAL TO OTHER ITEMS.

3. LUMP SUM QUANTITIES (LSQ) - These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job. They shall not be measured.

2. All materials and construction techniques shall meet applicable Local codes or the requirements herein, whichever is stricter.